Analysis of two hydroponic production techniques: floating root and substrate (gravel-coal slag, hydrogel) validated by bioassay in an aquaponics prototype

Main Article Content

J. Y. Martín
J. A. Franco
D. R. Acosta

Abstract

Abstract: In urban areas, improving food production techniques is an urgent necessity due to population growth and socio-environmental factors that limit access to these products in terms of cost, quality, and resource use. This study compared two hydroponic production techniques—floating root and substrate-based (gravel, coal slag, and hydrogel)—tested in a functional urban aquaponic prototype using common carp (*Cyprinus carpio*) and Batavia lettuce. A mixed-methods approach (combining experimentation with analysis and interpretation) was employed. The results highlight that using hydrogel in greenhouse systems provides a suitable medium for more abundant and elongated root development; furthermore, it allows for a shorter harvest time due to the material's capacity to retain nutrients and water. Successful reproduction of the animal species within the system was also achieved.


Article Details

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Artículos de Investigación Científica y Tecnológica

How to Cite

[1]
J. Y. Martín, J. A. Franco, and D. R. Acosta, “Analysis of two hydroponic production techniques: floating root and substrate (gravel-coal slag, hydrogel) validated by bioassay in an aquaponics prototype”, I, vol. 20, no. 39, pp. 51–65, Jul. 2026, doi: 10.26620/uniminuto.inventum.20.39.2025.51-65.